Science

Hi Pradip,
Yes, chances are there. You need to get in touch with the universities and professors having similar research interests. Look for a post-doctorate, you have to proactively search on the university websites and communicate with them, share your topics, publications, etc. It is a time-consuming affair but you have to be patient.

After doing B.Sc Chemistry, one can go for M.Sc in Chemistry or take up various jobs and also take up internships to prepare for industry level entries. Some of the jobs are as follows:
Analytical Chemist
Bio-medical Chemist
Chemical Engineering Associate
Industrial Research Scientist
Lab Chemist
Materials Technologist
Production Chemist
Production Officer
Quality Controller
R&D Director
Research & Development Manager
Safety Health and Environment Specialist
All the best.

Gemology is the study of Science in which you can learn how to identify the natural gem, diamond, stones, asteroids, etc. In this course, you can also learn about the depth knowledge of gems.
Gemology deals with the natural as well as artificial gemstone materials.

You can try for PG in research work in the field of Finance and economics. Financial Inclusion is one of the concerned problem of India, many institutes are working towards its cause and remedies. You can opt for PG in finance. Its an option you can look for.

Hi Ashutosh,
Some popular exams are:
JEE Mains
JEE Advanced
BITSAT
NATA (National Aptitude Test in Architecture)
VITEEE
AIIMS-MBBS
National Defence Academy (NDA) and Naval Academy (NA) Exams

You will face no challenges while doing B.Tech in CSE. You may learn a programming language by your own to have an edge in the first year of B.Tech in CSE.